Sofa frame



FIG. 1 is a top, front, left side perspective view of a sofa frame showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top, front, left side perspective view of a second embodiment of a sofa frame shown broken away for indeterminate length, that being the only difference from the embodiment shown in FIGS. 1-7.

The broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a sofa frame, as shown and described. 